[Healeys] Thermostats

[Bob Spidell]

re: "... there will be air pockets in the cooling system that you can 
not remove any other way."

My mom's Lincoln LS has such a system (I believe it has a British-built 
engine, same as the Ford-built Jags).  Because of the steep slope of the 
bonnet, the top of the radiator is below the high point in the engine's 
cooling system.  You have to vent the air in the high point--sometimes 
called 'burping' the engine--but, fortunately, the Lincoln has a vent 
that can be opened.

Bo


On 9/17/2018 9:00 AM, David Nock BCS wrote:
> The main purpose of putting a higher pressure cap is to stop the 
> continues loss of coolant after shutting the engine down and the 
> engine temp going up over the 212 point.  By putting a 10 or 13 max 
> pressure cap you have raised the boiling point 10 to 20 degrees thus 
> stopping the coolant loss.
> It wont do anything for the overheating.
> On your newer cars today they need a much higher pressure cap because 
> the run the engine temp much higher to reduce emissions. I have seen 
> some new Jaguars and Land Rovers that are running a 25 lb cap. As well 
> as cooling systems that you can not fill up correctly with out using a 
> vacuum type filler. Due to the fact that there will be air pockets in 
> the cooling system that you can not remove any other way.
> David Nock
> British Car Specialists
> 209-948-8767
> www.britishcarspecialists.com <http://www.britishcarspecialists.com>
>

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